EP 1477022 A1 20041117 - POWER SUPPLY UNIT COMPRISING A SWITCHED-MODE POWER SUPPLY
Title (en)
POWER SUPPLY UNIT COMPRISING A SWITCHED-MODE POWER SUPPLY
Title (de)
STROMVERSORGUNGSEINHEIT MIT EINEM SCHALTNETZTEIL
Title (fr)
UNITE D'ALIMENTATION A ALIMENTATION EN MODE COMMUTE
Publication
Application
Priority
- DE 10207752 A 20020223
- DE 10221710 A 20020516
- EP 0301416 W 20030213
Abstract (en)
[origin: WO03071792A1] The power supply unit comprises a switched-mode power supply which has a transformer TR1 with a primary winding W1 and a multitude of secondary windings W2, W3, a switching transistor T1 which is coupled to the primary winding W1 and a control circuit by means of which an output voltage U2 from the switched-mode power supply can be stabilized on the flyback converter principle. The power supply also comprises a switching regulator 7 which is connected to a secondary winding W3 which supplies a positive voltage U3 when the switching transistor T1 is in the switched-on phase. The output voltage U4 which is produced by the switching regulator is used in particular for operation of a low-noise converter LNB. In one preferred embodiment, the switched-mode regulator 7 is a step-down converter, and the secondary winding W3 supplies a rectified output voltage U4 via a rectifier means D4, the value of which output voltage U4 is preferably in a range from 25 to 50 volts. This allows to compensate for brief interruptions in the mains voltage.
IPC 1-7
IPC 8 full level
H02M 3/335 (2006.01); H04N 5/63 (2006.01)
CPC (source: EP US)
H02M 3/33561 (2013.01 - EP US); H02M 1/007 (2021.05 - EP US); H04N 5/63 (2013.01 - EP US)
Citation (search report)
See references of WO 03071792A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03071792 A1 20030828; AU 2003208844 A1 20030909; EP 1477022 A1 20041117; US 2005088858 A1 20050428
DOCDB simple family (application)
EP 0301416 W 20030213; AU 2003208844 A 20030213; EP 03706493 A 20030213; US 50504404 A 20040818